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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/options.nim
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@ -116,7 +116,7 @@ type
cmdJsonScript # compile a .json build file
TStringSeq* = seq[string]
TGCMode* = enum # the selected GC
gcUnselected, gcNone, gcBoehm, gcRegions, gcMarkAndSweep, gcDestructors,
gcUnselected, gcNone, gcBoehm, gcRegions, gcMarkAndSweep, gcArc, gcOrc,
gcHooks,
gcRefc, gcV2, gcGo
# gcRefc and the GCs that follow it use a write barrier,