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move analyser is smarter; refs #11053

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This commit is contained in:
Andreas Rumpf 2019-04-18 20:55:59 +02:00
commit a394d31746
2 changed files with 17 additions and 9 deletions
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compiler/dfa.nim
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@ -634,11 +634,14 @@ proc isAnalysableFieldAccess*(n: PNode; owner: PSym): bool =
# XXX Allow closure deref operations here if we know
# the owner controlled the closure allocation?
result = n.kind == nkSym and n.sym.owner == owner and
owner.kind != skModule and (n.sym.kind != skParam or isSinkParam(n.sym))
owner.kind != skModule and
(n.sym.kind != skParam or isSinkParam(n.sym)) # or n.sym.typ.kind == tyVar)
proc genDef(c: var Con; n: PNode) =
if n.kind == nkSym and n.sym.kind in InterestingSyms:
c.code.add Instr(n: n, kind: def, sym: n.sym)
elif isAnalysableFieldAccess(n, c.owner):
c.code.add Instr(n: n, kind: def, sym: nil)
proc canRaise(fn: PNode): bool =
const magicsThatCanRaise = {