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1044428
2015 Feb 19
2
[LLVMdev] ScheduleDAGInstrs computes deps using IR Values that may be invalid
Hi All,
I've encountered an issue where tail merging MIs is causing a problem with
the post-RA MI scheduler dependency analysis and I'm not sure of the best
way to address the problem.
In my case, the branch folding pass (lib/CodeGen/BranchFolding.cpp) is
merging common code from BB#14 and BB#15 into BB#16. It's clear that
there are 4 common instructions (marked with an *) in BB#14