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destroyer pass: adaptations for the new destructor based runtime

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This commit is contained in:
Andreas Rumpf
2018-07-27 18:21:32 +02:00
parent ef4b755183
commit 700448f359
2 changed files with 27 additions and 7 deletions
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6
compiler/destroyer.nim
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@@ -258,8 +258,10 @@ proc registerDropBit(c: var Con; s: PSym) =
c.toDropBit[s.id] = result
# generate:
# if not sinkParam_AliveBit: `=destroy`(sinkParam)
c.destroys.add newTree(nkIfStmt,
newTree(nkElifBranch, newSymNode result, genDestroy(c, s.typ, newSymNode s)))
let t = s.typ.skipTypes({tyGenericInst, tyAlias, tySink})
if t.destructor != nil:
c.destroys.add newTree(nkIfStmt,
newTree(nkElifBranch, newSymNode result, genDestroy(c, t, newSymNode s)))
proc p(n: PNode; c: var Con): PNode

28
compiler/semasgn.nim
View File

@@ -197,13 +197,10 @@ proc liftBodyAux(c: var TLiftCtx; t: PType; body, x, y: PNode) =
case t.kind
of tyNone, tyEmpty, tyVoid: discard
of tyPointer, tySet, tyBool, tyChar, tyEnum, tyInt..tyUInt64, tyCString,
tyPtr, tyString, tyRef, tyOpt:
tyPtr, tyRef, tyOpt:
defaultOp(c, t, body, x, y)
of tyArray, tySequence:
of tyArray:
if {tfHasAsgn, tfUncheckedArray} * t.flags == {tfHasAsgn}:
if t.kind == tySequence:
# XXX add 'nil' handling here
body.add newSeqCall(c.c, x, y)
let i = declareCounter(c, body, firstOrd(c.c.config, t))
let whileLoop = genWhileLoop(c, i, x)
let elemType = t.lastSon
@@ -213,6 +210,27 @@ proc liftBodyAux(c: var TLiftCtx; t: PType; body, x, y: PNode) =
body.add whileLoop
else:
defaultOp(c, t, body, x, y)
of tySequence:
# note that tfHasAsgn is propagated so we need the check on
# 'selectedGC' here to determine if we have the new runtime.
if c.c.config.selectedGC == gcDestructors:
discard considerOverloadedOp(c, t, body, x, y)
elif tfHasAsgn in t.flags:
body.add newSeqCall(c.c, x, y)
let i = declareCounter(c, body, firstOrd(c.c.config, t))
let whileLoop = genWhileLoop(c, i, x)
let elemType = t.lastSon
liftBodyAux(c, elemType, whileLoop.sons[1], x.at(i, elemType),
y.at(i, elemType))
addIncStmt(c, whileLoop.sons[1], i)
body.add whileLoop
else:
defaultOp(c, t, body, x, y)
of tyString:
if tfHasAsgn in t.flags:
discard considerOverloadedOp(c, t, body, x, y)
else:
defaultOp(c, t, body, x, y)
of tyObject, tyDistinct:
if not considerOverloadedOp(c, t, body, x, y):
if t.sons[0] != nil: