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new move analyser2 (#20471)

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* produce better code for closure environment creation
* new 'first write' analysis; 
* scope based move analyser
* code cleanup

Co-authored-by: ringabout <43030857+ringabout@users.noreply.github.com>
This commit is contained in:
Andreas Rumpf 2022-10-01 16:46:51 +02:00 • committed by GitHub
commit 8d47bf1822
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19 changed files with 472 additions and 684 deletions
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2
compiler/ccgcalls.nim
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@ -313,7 +313,7 @@ proc genArgNoParam(p: BProc, n: PNode; result: var Rope; needsTmp = false) =
initLocExprSingleUse(p, n, a)
addRdLoc(withTmpIfNeeded(p, a, needsTmp), result)
from dfa import aliases, AliasKind
import aliasanalysis
proc potentialAlias(n: PNode, potentialWrites: seq[PNode]): bool =
for p in potentialWrites: