------- Comment #2 from jakub at gcc dot gnu dot org 2010-05-06 13:07 ------- DEBUG_INSNs must not affect code generation (in scheduling case scheduling of non-DEBUG_INSNs). Does the testcase fail with -fcompare-debug? >From your description it is unclear what is going on. Perhaps you should attach snippets before and after scheduling and say what do you think is wrong and why.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44013