[llvm-dev] Need help with changes to 'ScheduleDAGInstrs' on the v3.8 branch

[Martin J. O'Riordan via llvm-dev]

I am stuck trying to adapt my out-of-target implementation to build on SVN
head (actually the v3.8 branch, rev #257626).  This is currently working on
the v3.7.1 sources, but the changes to 'llvm::ScheduleDAGInstrs' have me
stumped as to how to revise my implementation to track the changes to this
class.

Our 'SHAVEAsmScheduler' derives from 'ScheduleDAGInstrs' and uses both the
'IsPostRA' and 'LiveIntervals' that were in 'ScheduleDAGInstrs', but which
have now been removed.

Are there any guidelines as to how implementations such as ours which are
still using a legacy scheduling model should be migrated to whatever the
preferred scheduling model is?  I expect that this code was originally
written a long time ago, probably based on LLVM v2.9 or v3.0 in 2011, and
LLVM would have had a significantly different architecture then.

Thanks,

	MartinO