* Minor documentation problem
@ 2005-07-27 11:55 Ioannis E. Venetis
2005-07-27 16:18 ` Ian Lance Taylor
0 siblings, 1 reply; 5+ messages in thread
From: Ioannis E. Venetis @ 2005-07-27 11:55 UTC (permalink / raw)
To: gcc
Hello,
I downloaded gcc 4.0.1 and created the manual with 'make dvi'. While
browsing through it, I noticed the option -ftree-dse, which is mentioned
in paragraph 3.1 (Options summary) and in paragraph 3.10 (Options That
Control Optimization) under -O1.
However, this option is not documented in the manual. What does it do?
Thank you,
Ioannis
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Minor documentation problem
2005-07-27 11:55 Minor documentation problem Ioannis E. Venetis
@ 2005-07-27 16:18 ` Ian Lance Taylor
2005-07-29 11:17 ` Ioannis E. Venetis
0 siblings, 1 reply; 5+ messages in thread
From: Ian Lance Taylor @ 2005-07-27 16:18 UTC (permalink / raw)
To: Ioannis E. Venetis; +Cc: gcc
"Ioannis E. Venetis" <iev@hpclab.ceid.upatras.gr> writes:
> I downloaded gcc 4.0.1 and created the manual with 'make dvi'. While
> browsing through it, I noticed the option -ftree-dse, which is
> mentioned in paragraph 3.1 (Options summary) and in paragraph 3.10
> (Options That Control Optimization) under -O1.
>
> However, this option is not documented in the manual. What does it do?
It does dead store elimination. To quote from tree-ssa-dce.c:
A dead store is a store into a memory location which will later be
overwritten by another store without any intervening loads. In this
case the earlier store can be deleted.
Not describing this option is a documentation bug. If you feel like
it, please submit a patch or a bug report
(http://gcc.gnu.org/bugzilla/). Thanks.
Ian
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Minor documentation problem
2005-07-27 16:18 ` Ian Lance Taylor
@ 2005-07-29 11:17 ` Ioannis E. Venetis
2005-07-29 19:16 ` James E Wilson
2005-07-29 22:32 ` Ian Lance Taylor
0 siblings, 2 replies; 5+ messages in thread
From: Ioannis E. Venetis @ 2005-07-29 11:17 UTC (permalink / raw)
To: Ian Lance Taylor; +Cc: gcc
Hello again,
Sorry for the late response. Before creating the bug report I though I
should search the bugs database and I found that a comment for bug 13756
mentions the missing documentation for -ftree-dse
(http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13756#c8).
Should I still create a new bug report?
Thanks,
Ioannis
Ian Lance Taylor wrote:
> "Ioannis E. Venetis" <iev@hpclab.ceid.upatras.gr> writes:
>
>
>>I downloaded gcc 4.0.1 and created the manual with 'make dvi'. While
>>browsing through it, I noticed the option -ftree-dse, which is
>>mentioned in paragraph 3.1 (Options summary) and in paragraph 3.10
>>(Options That Control Optimization) under -O1.
>>
>>However, this option is not documented in the manual. What does it do?
>
>
> It does dead store elimination. To quote from tree-ssa-dce.c:
>
> A dead store is a store into a memory location which will later be
> overwritten by another store without any intervening loads. In this
> case the earlier store can be deleted.
>
> Not describing this option is a documentation bug. If you feel like
> it, please submit a patch or a bug report
> (http://gcc.gnu.org/bugzilla/). Thanks.
>
> Ian
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Minor documentation problem
2005-07-29 11:17 ` Ioannis E. Venetis
@ 2005-07-29 19:16 ` James E Wilson
2005-07-29 22:32 ` Ian Lance Taylor
1 sibling, 0 replies; 5+ messages in thread
From: James E Wilson @ 2005-07-29 19:16 UTC (permalink / raw)
To: Ioannis E. Venetis; +Cc: gcc
Ioannis E. Venetis wrote:
> I found that a comment for bug 13756
> mentions the missing documentation for -ftree-dse
> Should I still create a new bug report?
No. Since we already have one, we don't need another one.
--
Jim Wilson, GNU Tools Support, http://www.specifix.com
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Minor documentation problem
2005-07-29 11:17 ` Ioannis E. Venetis
2005-07-29 19:16 ` James E Wilson
@ 2005-07-29 22:32 ` Ian Lance Taylor
1 sibling, 0 replies; 5+ messages in thread
From: Ian Lance Taylor @ 2005-07-29 22:32 UTC (permalink / raw)
To: Ioannis E. Venetis; +Cc: gcc
"Ioannis E. Venetis" <iev@hpclab.ceid.upatras.gr> writes:
> Sorry for the late response. Before creating the bug report I though I
> should search the bugs database and I found that a comment for bug
> 13756 mentions the missing documentation for -ftree-dse
> (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13756#c8).
>
> Should I still create a new bug report?
No, that's fine. Thanks for checking.
Ian
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-07-29 22:32 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-07-27 11:55 Minor documentation problem Ioannis E. Venetis
2005-07-27 16:18 ` Ian Lance Taylor
2005-07-29 11:17 ` Ioannis E. Venetis
2005-07-29 19:16 ` James E Wilson
2005-07-29 22:32 ` Ian Lance Taylor
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).