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Diffstat (limited to 'include/clang/AST/Type.h')
-rw-r--r--include/clang/AST/Type.h95
1 files changed, 63 insertions, 32 deletions
diff --git a/include/clang/AST/Type.h b/include/clang/AST/Type.h
index f14b652372..c24bddb300 100644
--- a/include/clang/AST/Type.h
+++ b/include/clang/AST/Type.h
@@ -768,15 +768,25 @@ private:
/// Note that this should stay at the end of the ivars for Type so that
/// subclasses can pack their bitfields into the same word.
bool Dependent : 1;
-
+
+ /// \brief Whether the linkage of this type is already known.
+ mutable bool LinkageKnown : 1;
+
+ /// \brief Linkage of this type.
+ mutable unsigned CachedLinkage : 2;
+
protected:
- enum { BitsRemainingInType = 23 };
+ /// \brief Compute the linkage of this type.
+ virtual Linkage getLinkageImpl() const;
+
+ enum { BitsRemainingInType = 20 };
// silence VC++ warning C4355: 'this' : used in base member initializer list
Type *this_() { return this; }
Type(TypeClass tc, QualType Canonical, bool dependent)
: CanonicalType(Canonical.isNull() ? QualType(this_(), 0) : Canonical),
- TC(tc), Dependent(dependent) {}
+ TC(tc), Dependent(dependent), LinkageKnown(false),
+ CachedLinkage(NoLinkage) {}
virtual ~Type() {}
virtual void Destroy(ASTContext& C);
friend class ASTContext;
@@ -977,10 +987,13 @@ public:
/// set of type specifiers.
bool isSpecifierType() const;
- const char *getTypeClassName() const;
-
/// \brief Determine the linkage of this type.
- virtual Linkage getLinkage() const;
+ Linkage getLinkage() const;
+
+ /// \brief Note that the linkage is no longer known.
+ void ClearLinkageCache();
+
+ const char *getTypeClassName() const;
QualType getCanonicalTypeInternal() const {
return CanonicalType;
@@ -1055,6 +1068,10 @@ public:
};
private:
Kind TypeKind;
+
+protected:
+ virtual Linkage getLinkageImpl() const;
+
public:
BuiltinType(Kind K)
: Type(Builtin, QualType(), /*Dependent=*/(K == Dependent)),
@@ -1082,8 +1099,6 @@ public:
return TypeKind >= Float && TypeKind <= LongDouble;
}
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) { return T->getTypeClass() == Builtin; }
static bool classof(const BuiltinType *) { return true; }
};
@@ -1098,6 +1113,10 @@ class ComplexType : public Type, public llvm::FoldingSetNode {
ElementType(Element) {
}
friend class ASTContext; // ASTContext creates these.
+
+protected:
+ virtual Linkage getLinkageImpl() const;
+
public:
QualType getElementType() const { return ElementType; }
@@ -1111,8 +1130,6 @@ public:
ID.AddPointer(Element.getAsOpaquePtr());
}
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) { return T->getTypeClass() == Complex; }
static bool classof(const ComplexType *) { return true; }
};
@@ -1126,6 +1143,10 @@ class PointerType : public Type, public llvm::FoldingSetNode {
Type(Pointer, CanonicalPtr, Pointee->isDependentType()), PointeeType(Pointee) {
}
friend class ASTContext; // ASTContext creates these.
+
+protected:
+ virtual Linkage getLinkageImpl() const;
+
public:
QualType getPointeeType() const { return PointeeType; }
@@ -1140,8 +1161,6 @@ public:
ID.AddPointer(Pointee.getAsOpaquePtr());
}
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) { return T->getTypeClass() == Pointer; }
static bool classof(const PointerType *) { return true; }
};
@@ -1157,6 +1176,10 @@ class BlockPointerType : public Type, public llvm::FoldingSetNode {
PointeeType(Pointee) {
}
friend class ASTContext; // ASTContext creates these.
+
+protected:
+ virtual Linkage getLinkageImpl() const;
+
public:
// Get the pointee type. Pointee is required to always be a function type.
@@ -1172,8 +1195,6 @@ public:
ID.AddPointer(Pointee.getAsOpaquePtr());
}
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) {
return T->getTypeClass() == BlockPointer;
}
@@ -1209,6 +1230,9 @@ protected:
PointeeType(Referencee), SpelledAsLValue(SpelledAsLValue),
InnerRef(Referencee->isReferenceType()) {
}
+
+ virtual Linkage getLinkageImpl() const;
+
public:
bool isSpelledAsLValue() const { return SpelledAsLValue; }
bool isInnerRef() const { return InnerRef; }
@@ -1232,8 +1256,6 @@ public:
ID.AddBoolean(SpelledAsLValue);
}
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) {
return T->getTypeClass() == LValueReference ||
T->getTypeClass() == RValueReference;
@@ -1290,6 +1312,10 @@ class MemberPointerType : public Type, public llvm::FoldingSetNode {
PointeeType(Pointee), Class(Cls) {
}
friend class ASTContext; // ASTContext creates these.
+
+protected:
+ virtual Linkage getLinkageImpl() const;
+
public:
QualType getPointeeType() const { return PointeeType; }
@@ -1308,8 +1334,6 @@ public:
ID.AddPointer(Class);
}
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) {
return T->getTypeClass() == MemberPointer;
}
@@ -1351,6 +1375,9 @@ protected:
ElementType(et), SizeModifier(sm), IndexTypeQuals(tq) {}
friend class ASTContext; // ASTContext creates these.
+
+ virtual Linkage getLinkageImpl() const;
+
public:
QualType getElementType() const { return ElementType; }
ArraySizeModifier getSizeModifier() const {
@@ -1361,8 +1388,6 @@ public:
}
unsigned getIndexTypeCVRQualifiers() const { return IndexTypeQuals; }
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) {
return T->getTypeClass() == ConstantArray ||
T->getTypeClass() == VariableArray ||
@@ -1638,6 +1663,9 @@ protected:
: Type(tc, canonType, vecType->isDependentType()), ElementType(vecType),
NumElements(nElements), AltiVec(isAltiVec), Pixel(isPixel) {}
friend class ASTContext; // ASTContext creates these.
+
+ virtual Linkage getLinkageImpl() const;
+
public:
QualType getElementType() const { return ElementType; }
@@ -1664,8 +1692,6 @@ public:
ID.AddBoolean(isPixel);
}
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) {
return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector;
}
@@ -1873,6 +1899,10 @@ class FunctionNoProtoType : public FunctionType, public llvm::FoldingSetNode {
: FunctionType(FunctionNoProto, Result, false, 0, Canonical,
/*Dependent=*/false, Info) {}
friend class ASTContext; // ASTContext creates these.
+
+protected:
+ virtual Linkage getLinkageImpl() const;
+
public:
// No additional state past what FunctionType provides.
@@ -1890,8 +1920,6 @@ public:
ID.AddPointer(ResultType.getAsOpaquePtr());
}
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) {
return T->getTypeClass() == FunctionNoProto;
}
@@ -1955,6 +1983,9 @@ class FunctionProtoType : public FunctionType, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.
+protected:
+ virtual Linkage getLinkageImpl() const;
+
public:
unsigned getNumArgs() const { return NumArgs; }
QualType getArgType(unsigned i) const {
@@ -1995,8 +2026,6 @@ public:
bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) {
return T->getTypeClass() == FunctionProto;
}
@@ -2201,6 +2230,8 @@ class TagType : public Type {
protected:
TagType(TypeClass TC, const TagDecl *D, QualType can);
+ virtual Linkage getLinkageImpl() const;
+
public:
TagDecl *getDecl() const { return decl.getPointer(); }
@@ -2209,8 +2240,6 @@ public:
bool isBeingDefined() const { return decl.getInt(); }
void setBeingDefined(bool Def) const { decl.setInt(Def? 1 : 0); }
- virtual Linkage getLinkage() const;
-
static bool classof(const Type *T) {
return T->getTypeClass() >= TagFirst && T->getTypeClass() <= TagLast;
}
@@ -2813,6 +2842,9 @@ protected:
NumProtocols(0),
BaseType(QualType(this_(), 0)) {}
+protected:
+ Linkage getLinkageImpl() const; // key function
+
public:
/// getBaseType - Gets the base type of this object type. This is
/// always (possibly sugar for) one of:
@@ -2864,8 +2896,6 @@ public:
bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }
- Linkage getLinkage() const; // key function
-
static bool classof(const Type *T) {
return T->getTypeClass() == ObjCObject ||
T->getTypeClass() == ObjCInterface;
@@ -2974,6 +3004,9 @@ class ObjCObjectPointerType : public Type, public llvm::FoldingSetNode {
PointeeType(Pointee) {}
friend class ASTContext; // ASTContext creates these.
+protected:
+ virtual Linkage getLinkageImpl() const;
+
public:
void Destroy(ASTContext& C);
@@ -3076,8 +3109,6 @@ public:
bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }
- virtual Linkage getLinkage() const;
-
void Profile(llvm::FoldingSetNodeID &ID) {
Profile(ID, getPointeeType());
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-07-15 02:24:55 +0000