[PATCH] D46870: [MachineScheduler] Don't enforce some hazard checks pre-RA.

[Javed Absar via Phabricator via llvm-commits]

javed.absar added inline comments.


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Comment at: lib/CodeGen/MachineScheduler.cpp:2257
 
   // Bump the cycle count for issue group constraints.
   // This must be done after NextCycle has been adjust for all other stalls.
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Probably the comment here needs updating if we are going to change behaviour. 
There is another problem - 
"Single Issue " relies on BeginGroup/EndGroup and that is not just PostRA related.


https://reviews.llvm.org/D46870