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An optimizer for ARC (#14962)

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* WIP: an optimizer for ARC
* do not optimize away destructors in 'finally' if unstructured control flow is involved
* optimized the optimizer
* minor code cleanup
* first steps to .cursor inference
* cursor inference: big steps to a working solution
* baby steps
* better .cursor inference
* new feature: expandArc for easy inspection of the AST after ARC transformations
* added topt_cursor test
* adapt tests
* cleanups, make tests green
* optimize common traversal patterns
* moved test case
* fixes .cursor inference so that npeg compiles once again
* cursor inference: more bugfixes

Co-authored-by: Clyybber <darkmine956@gmail.com>
This commit is contained in:
Andreas Rumpf 2020-07-15 23:00:06 +02:00 • committed by GitHub
commit c5358b0d4b
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19 changed files with 895 additions and 62 deletions
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compiler/options.nim
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@ -235,6 +235,7 @@ type
options*: TOptions # (+)
globalOptions*: TGlobalOptions # (+)
macrosToExpand*: StringTableRef
arcToExpand*: StringTableRef
m*: MsgConfig
evalTemplateCounter*: int
evalMacroCounter*: int
@ -410,6 +411,7 @@ proc newConfigRef*(): ConfigRef =
options: DefaultOptions,
globalOptions: DefaultGlobalOptions,
macrosToExpand: newStringTable(modeStyleInsensitive),
arcToExpand: newStringTable(modeStyleInsensitive),
m: initMsgConfig(),
evalExpr: "",
cppDefines: initHashSet[string](),