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arc optimizations (#13325)

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* scope based destructors
* handle 'or' and 'and' expressions properly, see the new test arc/tcontrolflow.nim
* make this branch mergable, logic is disabled for now
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Andreas Rumpf 2020-03-18 16:57:34 +01:00 • committed by GitHub
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11 changed files with 312 additions and 95 deletions
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tests/destructor/tdestructor.nim
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@ -33,7 +33,7 @@ type
p: pointer
proc `=destroy`(o: var TMyObj) =
if o.p != nil:
if o.p != nil:
dealloc o.p
o.p = nil
echo "myobj destroyed"