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ARC: cycle detector (#12823)

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* first implementation of the =trace and =dispose hooks for the cycle collector
* a cycle collector for ARC: progress
* manual: the .acyclic pragma is a thing once again
* gcbench: adaptations for --gc:arc
* enable valgrind tests for the strutils tests
* testament: better valgrind support
* ARC refactoring: growable jumpstacks
* ARC cycle detector: non-recursive algorithm
* moved and renamed core/ files back to system/
* refactoring: --gc:arc vs --gc:orc since 'orc' is even more experimental and we want to ship --gc:arc soonish
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Andreas Rumpf 2019-12-17 17:37:50 +01:00 • committed by GitHub
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@ -17,6 +17,7 @@ import strutils, intsets, tables, ropes, db_sqlite, msgs, options,
## - Dependency computation should use *signature* hashes in order to
## avoid recompiling dependent modules.
## - Patch the rest of the compiler to do lazy loading of proc bodies.
## - serialize the AST in a smarter way (avoid storing some ASTs twice!)
template db(): DbConn = g.incr.db