I tried to boot 2.6.29 or whatever... It was so slow compared to 2.4 i donno what to say, except its crap. Not a surprise if gcc produces crappier and crappier 68k binaries anyway.
Would you mind submitting a bug report or two with preprocessed testcases showing examples of bad code generation on m68k, especially if the code has regressed since some previous version of GCC?
Please CC me on the bug reports. Thanks, -- Maxim K. CodeSourcery