This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: Performance measurements
> I got a testcase written in C in early 1996! (three
> different matrix multiply algorithms). This testcase
> resulted in the -mstack-align-double switch of pgcc, and
> support for this in glibc and djgpp (not yet distributed,
> though)
We got one end May / beginning of June '96. Fortunately, we were
able to help the guy with telling him to "SAVE", i.e. "make static"
in C-speak, a handful of variables.
However, the general problem had already been brought to the
attention of the gcc2 mailing list on the 24th of February '96 by
Robert Dewar (dewar@gnat.com)
> For P5 and P6 machines, it is important to 8-byte align
> double floats, I have to check the alignment requirement
> for 80-bit reals, I would guess it is also 64-bits but
> I am not sure about that.
Cheers,
Toon.