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LowerHopToActor: insert a borrow scope for an Optional<Actor>.none value #82177

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Merged
merged 1 commit into from
Jun 12, 2025
Merged

LowerHopToActor: insert a borrow scope for an Optional<Actor>.none value #82177

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2 changes: 1 addition & 1 deletion lib/SILOptimizer/Mandatory/LowerHopToActor.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -273,7 +273,7 @@ SILValue LowerHopToActor::emitGetExecutor(SILBuilderWithScope &B,
if (auto wrappedActor = actorType->getOptionalObjectType()) {
assert(makeOptional);

if (B.hasOwnership() && actor->getOwnershipKind() == OwnershipKind::Owned) {
if (B.hasOwnership() && actor->getOwnershipKind() != OwnershipKind::Guaranteed) {
actor = B.createBeginBorrow(loc, actor);
needEndBorrow = true;
}
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14 changes: 14 additions & 0 deletions test/SILOptimizer/lower_hop_to_actor.sil
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Expand Up @@ -307,3 +307,17 @@ bb0(%0 : @guaranteed $Optional<any Actor>):
return %r
}

// CHECK-LABEL: sil [ossa] @optional_none :
// CHECK: %0 = enum
// CHECK-NEXT: %1 = begin_borrow %0
// CHECK-NEXT: switch_enum %1
// CHECK: mark_dependence
// CHECK-NEXT: end_borrow %1
// CHECKL: } // end sil function '@optional_none'
sil [ossa] @optional_none : $@convention(thin) @async () -> () {
bb0:
%0 = enum $Optional<any Actor>, #Optional.none!enumelt
hop_to_executor %0
%r = tuple ()
return %r
}