diff options
Diffstat (limited to 'lib/AST/ASTContext.cpp')
| -rw-r--r-- | lib/AST/ASTContext.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp index a68fea469d..0b513ecbd1 100644 --- a/lib/AST/ASTContext.cpp +++ b/lib/AST/ASTContext.cpp @@ -931,6 +931,19 @@ QualType ASTContext::getPointerDiffType() const { // Type Operators //===----------------------------------------------------------------------===// +/// getCanonicalType - Return the canonical (structural) type corresponding to +/// the specified potentially non-canonical type. The non-canonical version +/// of a type may have many "decorated" versions of types. Decorators can +/// include typedefs, 'typeof' operators, etc. The returned type is guaranteed +/// to be free of any of these, allowing two canonical types to be compared +/// for exact equality with a simple pointer comparison. +QualType ASTContext::getCanonicalType(QualType T) { + QualType CanType = T.getTypePtr()->getCanonicalTypeInternal(); + return QualType(CanType.getTypePtr(), + T.getCVRQualifiers() | CanType.getCVRQualifiers()); +} + + /// getArrayDecayedType - Return the properly qualified result of decaying the /// specified array type to a pointer. This operation is non-trivial when /// handling typedefs etc. The canonical type of "T" must be an array type, |