This is the mail archive of the
cygwin@sourceware.cygnus.com
mailing list for the Cygwin project.
Support for malign-double?
- To: gnu-win32 at cygnus dot com
- Subject: Support for malign-double?
- From: Toshiyuki Nakata <nakata at csl dot cl dot nec dot co dot jp>
- Date: Wed, 19 Aug 1998 15:18:33 +0900
- cc: nakata at ccm dot cl dot nec dot co dot jp
I sent the folowing mail to Mr. Khan, but I suspect some other people
might be interested so I am sending the mail here as well.(With
modifications to make the mail abit more understandable)
Best Regards
Toshiyuki
nakata@ccm.cl.nec.co.jp
------- Forwarded Message
I have one question on performance related issue.
Do you support -malign-double in mingwin-32 and gnuwin-32 (egcs-1.0.2)?
The reason is that I have been comparing the performance of a user's
application on linux and Winnt and the interesting thing to note is that
They are comparable for integer performance but linux performance is
about 20% better for floating point intensive application.
I tried various optimization flags and my impression is that on mingwin,
the performance of floating point programs do not change with/without
the
- -malign-double option.
while with the linux box I get 10 to 20% better performance for
floating-point intensive applications if I specify the
-malign-double
option.
Best Regards
Toshiyuki Nakata
nakata@ccm.cl.nec.co.jp
-
For help on using this list (especially unsubscribing), send a message to
"gnu-win32-request@cygnus.com" with one line of text: "help".