From mboxrd@z Thu Jan 1 00:00:00 1970 From: Toon Moene To: Marc Lehmann Cc: egcs@cygnus.com Subject: Re: Performance measurements Date: Fri, 03 Jul 1998 07:20:00 -0000 Message-id: <9807031404.AA00696@moene.indiv.nluug.nl> References: <19980702003443.62031@cerebro.laendle> <199807021414.KAA28041@melange.gnu.org> <19980702195628.31642@cerebro.laendle> X-SW-Source: 1998-07/msg00144.html > 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.