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Fix TypeLowering: BitwiseCopyable archetypes are trivial #85455

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Fix TypeLowering: BitwiseCopyable archetypes are trivial #85455

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1 change: 1 addition & 0 deletions include/swift/SIL/SILTypeProperties.h
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Original file line number Diff line number Diff line change
Expand Up @@ -262,6 +262,7 @@ class SILTypeProperties {
return MayHaveCustomDeinit_t((Flags & CustomDeinitFlag) != 0);
}

void setTrivial() { Flags &= ~NonTrivialFlag; }
void setNonTrivial() { Flags |= NonTrivialFlag; }
void setIsOrContainsRawPointer() { Flags |= HasRawPointerFlag; }

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10 changes: 8 additions & 2 deletions lib/SIL/IR/TypeLowering.cpp
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Expand Up @@ -775,8 +775,14 @@ namespace {
type, getReferenceSILTypeProperties(isSensitive));
}
}
return asImpl().handleAddressOnly(
type, getOpaqueSILTypeProperties(isSensitive));
auto props = getOpaqueSILTypeProperties(isSensitive);
if (ProtocolDecl *bitwiseCopyable =
TC.Context.getProtocol(KnownProtocolKind::BitwiseCopyable)) {
// Archetypes only have unconditional conformance.
if (lookupConformance(type, bitwiseCopyable))
props.setTrivial();
}
return asImpl().handleAddressOnly(type, props);
}

RetTy visitExistentialType(CanType type,
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