Minor documentation problem
Ioannis E. Venetis
iev@hpclab.ceid.upatras.gr
Fri Jul 29 11:17:00 GMT 2005
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
>
>
More information about the Gcc
mailing list