Support for malign-double?

Toshiyuki Nakata
Wed Aug 19 19:35:00 GMT 1998

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
------- 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
- -malign-double option.

while with the linux box I get 10 to 20% better performance for
floating-point intensive applications if I specify the

Best  Regards

Toshiyuki Nakata

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