The implementation of TARGET_SCHED_PROLOG is incompatible with
some coming changes to how dwarf2 cfi is to be generated.
Some suggested solutions are:
(1) Remove the option. Is it really that interesting
beyond -mno-sched-insns2?
(2) Emit blockage insns at the end of the prologue
and the beginning of the epilogue. That'll prevent
the majority of the changes that scheduling could
introduce.
(3) Emit the prologue and epilogue somewhere after
scheduling and before final. E.g. md_reorg.
I'd be delighted if someone could actually implement one
of these changes at some point in the next week, but
failing that please weigh in on the preferred solution.
r~
