[BUG][GCC] *Serious* optimization bug: Any gcc specialistsout there?
Andres Valloud
avalloud at exobox.com
Fri Aug 4 20:29:57 UTC 2000
Hi.
Here's some mail from the GCC list.
~~~~~~~~~~~~~
In a message dated 11/19/99 12:17:09 AM Pacific Standard Time,
rth at cygnus.com
writes:
> It would be
> > nice if gcc could expand the safe versions of these functions in
> > -fno-fast-math mode.
>
> The code would be too big; you'd gain nothing.
Code size is a problem only for a minority of the functions in
mathinline.h
e.g. asin(), pow(), which aren't speeded up by in-lining and aren't so
well
implemented anyway. The greater problem is the lack of protection on
extreme
values of data.
Tim
tprince at computer.org
~~~~~~~~~~~~~
~~~~~~~~~~~~~
On Fri, Nov 19, 1999 at 08:49:25AM -0500, N8TM at aol.com wrote:
> The greater problem is the lack of protection on extreme
> values of data.
Exactly. It's the argument reduction loop that kills sin/cos
for expansion inline, when looking for Proper versions.
r~
~~~~~~~~~~~~~
I don't understand the Proper versions part, but...
Andres.
More information about the Squeak-dev
mailing list
|