I used GCC-4.0.0 to build the Dirac project. I used the --enable-mmx flag to enable MMX optimisations. Other versions of gcc (3.3.4 and 3.4.3) give a speedup of approximately 30% when the mmx optimisations are enabled. However with gcc-4.0.0, the performance of the Dirac encoder with MMX opts enabled is lots slower than with them disabled.
The configuration of my test machine is CPU - Intel(R) Pentium(R) 4 CPU 2.66GHz Memory - 512 KB OS: Suse Linux 9.2 My question is how do I report this as a bug? What information do I need to provide in the bug report? Did anybody else face similar problems with GCC-4.0.0 and MMX-enabled programs. Regards, A. Suraparaju --
