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[ownership] Change SILUndef to return Any ownership for trivial values and owned for non-trivial values.

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This is in preparation for verifying that when ownership verification is enabled
that only enums and trivial values can have any ownership. I am doing this in
preparation for eliminating ValueOwnershipKind::Trivial.

rdar://46294760
This commit is contained in:
Michael Gottesman
2018-11-26 16:39:22 -08:00
parent 83c4266e18
commit c9bb5161a1
16 changed files with 64 additions and 39 deletions
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13
include/swift/SIL/SILUndef.h
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@@ -23,8 +23,9 @@ class SILInstruction;
class SILModule;
class SILUndef : public ValueBase {
SILUndef(SILType Ty)
: ValueBase(ValueKind::SILUndef, Ty, IsRepresentative::Yes) {}
ValueOwnershipKind ownershipKind;
SILUndef(SILType type, SILModule &m);
public:
void operator=(const SILArgument &) = delete;
@@ -33,8 +34,12 @@ public:
static SILUndef *get(SILType ty, SILModule &m);
static SILUndef *get(SILType ty, SILModule *m) { return get(ty, *m); }
template<class OwnerTy>
static SILUndef *getSentinelValue(SILType Ty, OwnerTy Owner) { return new (*Owner) SILUndef(Ty); }
template <class OwnerTy>
static SILUndef *getSentinelValue(SILType type, SILModule &m, OwnerTy owner) {
return new (*owner) SILUndef(type, m);
}
ValueOwnershipKind getOwnershipKind() const { return ownershipKind; }
static bool classof(const SILArgument *) = delete;
static bool classof(const SILInstruction *) = delete;