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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
commit 83a736a34a
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45 changed files with 939 additions and 229 deletions
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compiler/sempass2.nim
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@ -872,6 +872,9 @@ proc track(tracked: PEffects, n: PNode) =
createTypeBoundOps(tracked, x[1].typ, n.info)
setLen(tracked.guards.s, oldFacts)
if tracked.owner.kind != skMacro:
# XXX n.typ can be nil in runnableExamples, we need to do something about it.
if n.typ != nil and n.typ.skipTypes(abstractInst).kind == tyRef:
createTypeBoundOps(tracked, n.typ.lastSon, n.info)
createTypeBoundOps(tracked, n.typ, n.info)
of nkTupleConstr:
for i in 0..<n.len: