Chandler Carruth adbf14ab85 [LCG] Completely remove the parent set and leaf tracking for RefSCCs. ... After the previous series of patches, this is now trivial and deletes a pretty astonishing amount of complexity. This has been a long time coming, as the move toward a PO sequence of RefSCCs started eroding the underlying use cases for this half of the data structure. Among the biggest advantages here is that now there aren't two independent data structures that need to stay in sync. Some of my profiling has also indicated that updating the parent sets was among the most expensive parts of the lazy call graph. Eliminating it whole sale is likely to be a nice win in terms of compile time. Last but not least, I had discussed with some folks previously keeping it around for asserts and other correctness checking, but once the fundamentals of the parent and child checking were implemented without the parent sets their value in correctness checking was tiny and no where near worth the cost of the complexity required to keep everything up-to-date. llvm-svn: 310171		2017-08-05 07:37:00 +00:00
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llvm	[LCG] Completely remove the parent set and leaf tracking for RefSCCs.	2017-08-05 07:37:00 +00:00
llvm-c	[ORC] Errorize the ORC APIs.	2017-07-07 02:59:13 +00:00