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sink parameter inference for types that have destructors (#13544)

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* ensure capitalize doesn't take an inferred sink parameter

* sink parameter inference: first version, for now disabled. Changed that sink parameters can be consumed multiple times in order to adhere to our spec.

* sink inference can now be disabled with .nosinks; sometimes for proc type interop this is required

* fixes yet another critical DFA bug

* better implementation that also understands if expressions etc

* document sink parameter inference and allow for global disabling
This commit is contained in:
Andreas Rumpf 2020-03-04 14:28:53 +01:00 • committed by GitHub
commit a0eca75182
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19 changed files with 158 additions and 28 deletions
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8
compiler/wordrecg.nim
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@ -42,7 +42,7 @@ type
wImportCompilerProc,
wImportc, wImportJs, wExportc, wExportCpp, wExportNims, wIncompleteStruct, wRequiresInit,
wAlign, wNodecl, wPure, wSideEffect, wHeader,
wNoSideEffect, wGcSafe, wNoreturn, wMerge, wLib, wDynlib,
wNoSideEffect, wGcSafe, wNoreturn, wNosinks, wMerge, wLib, wDynlib,
wCompilerProc, wCore, wProcVar, wBase, wUsed,
wFatal, wError, wWarning, wHint, wLine, wPush, wPop, wDefine, wUndef,
wLineDir, wStackTrace, wLineTrace, wLink, wCompile,
@ -52,7 +52,7 @@ type
wBoundChecks, wOverflowChecks, wNilChecks,
wFloatChecks, wNanChecks, wInfChecks, wStyleChecks,
wNonReloadable, wExecuteOnReload,
wAssertions, wPatterns, wTrMacros, wWarnings,
wAssertions, wPatterns, wTrMacros, wSinkInference, wWarnings,
wHints, wOptimization, wRaises, wWrites, wReads, wSize, wEffects, wTags,
wDeadCodeElimUnused, # deprecated, dead code elim always happens
wSafecode, wPackage, wNoForward, wReorder, wNoRewrite, wNoDestroy,
@ -128,7 +128,7 @@ const
"importcompilerproc", "importc", "importjs", "exportc", "exportcpp", "exportnims",
"incompletestruct",
"requiresinit", "align", "nodecl", "pure", "sideeffect",
"header", "nosideeffect", "gcsafe", "noreturn", "merge", "lib", "dynlib",
"header", "nosideeffect", "gcsafe", "noreturn", "nosinks", "merge", "lib", "dynlib",
"compilerproc", "core", "procvar", "base", "used",
"fatal", "error", "warning", "hint", "line",
"push", "pop", "define", "undef", "linedir", "stacktrace", "linetrace",
@ -140,7 +140,7 @@ const
"floatchecks", "nanchecks", "infchecks", "stylechecks",
"nonreloadable", "executeonreload",
"assertions", "patterns", "trmacros", "warnings", "hints",
"assertions", "patterns", "trmacros", "sinkinference", "warnings", "hints",
"optimization", "raises", "writes", "reads", "size", "effects", "tags",
"deadcodeelim", # deprecated, dead code elim always happens
"safecode", "package", "noforward", "reorder", "norewrite", "nodestroy",