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Fix #21722 (#22512)

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* Keep return in mind for sink
* Keep track of return using bool instead of mode
* Update compiler/injectdestructors.nim
* Add back IsReturn

---------

Co-authored-by: SirOlaf <>
Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
This commit is contained in:
SirOlaf
2023-08-19 21:04:25 +02:00
committed by GitHub
parent 93407096db
commit c0ecdb01a9
1 changed files with 8 additions and 6 deletions
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14
compiler/injectdestructors.nim
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@@ -79,11 +79,11 @@ proc getTemp(c: var Con; s: var Scope; typ: PType; info: TLineInfo): PNode =
proc nestedScope(parent: var Scope; body: PNode): Scope =
Scope(vars: @[], locals: @[], wasMoved: @[], final: @[], body: body, needsTry: false, parent: addr(parent))
proc p(n: PNode; c: var Con; s: var Scope; mode: ProcessMode; tmpFlags = {sfSingleUsedTemp}): PNode
proc p(n: PNode; c: var Con; s: var Scope; mode: ProcessMode; tmpFlags = {sfSingleUsedTemp}; inReturn = false): PNode
type
MoveOrCopyFlag = enum
IsDecl, IsExplicitSink
IsDecl, IsExplicitSink, IsReturn
proc moveOrCopy(dest, ri: PNode; c: var Con; s: var Scope; flags: set[MoveOrCopyFlag] = {}): PNode
@@ -272,7 +272,7 @@ proc deepAliases(dest, ri: PNode): bool =
proc genSink(c: var Con; s: var Scope; dest, ri: PNode; flags: set[MoveOrCopyFlag] = {}): PNode =
if (c.inLoopCond == 0 and (isUnpackedTuple(dest) or IsDecl in flags or
(isAnalysableFieldAccess(dest, c.owner) and isFirstWrite(dest, c)))) or
isNoInit(dest):
isNoInit(dest) or IsReturn in flags:
# optimize sink call into a bitwise memcopy
result = newTree(nkFastAsgn, dest, ri)
else:
@@ -765,7 +765,7 @@ proc pRaiseStmt(n: PNode, c: var Con; s: var Scope): PNode =
result.add copyNode(n[0])
s.needsTry = true
proc p(n: PNode; c: var Con; s: var Scope; mode: ProcessMode; tmpFlags = {sfSingleUsedTemp}): PNode =
proc p(n: PNode; c: var Con; s: var Scope; mode: ProcessMode; tmpFlags = {sfSingleUsedTemp}; inReturn = false): PNode =
if n.kind in {nkStmtList, nkStmtListExpr, nkBlockStmt, nkBlockExpr, nkIfStmt,
nkIfExpr, nkCaseStmt, nkWhen, nkWhileStmt, nkParForStmt, nkTryStmt, nkPragmaBlock}:
template process(child, s): untyped = p(child, c, s, mode)
@@ -949,7 +949,9 @@ proc p(n: PNode; c: var Con; s: var Scope; mode: ProcessMode; tmpFlags = {sfSing
if n[0].kind in {nkDotExpr, nkCheckedFieldExpr}:
cycleCheck(n, c)
assert n[1].kind notin {nkAsgn, nkFastAsgn, nkSinkAsgn}
let flags = if n.kind == nkSinkAsgn: {IsExplicitSink} else: {}
var flags = if n.kind == nkSinkAsgn: {IsExplicitSink} else: {}
if inReturn:
flags.incl(IsReturn)
result = moveOrCopy(p(n[0], c, s, mode), n[1], c, s, flags)
elif isDiscriminantField(n[0]):
result = c.genDiscriminantAsgn(s, n)
@@ -1033,7 +1035,7 @@ proc p(n: PNode; c: var Con; s: var Scope; mode: ProcessMode; tmpFlags = {sfSing
of nkReturnStmt:
result = shallowCopy(n)
for i in 0..<n.len:
result[i] = p(n[i], c, s, mode)
result[i] = p(n[i], c, s, mode, inReturn=true)
s.needsTry = true
of nkCast:
result = shallowCopy(n)