diff options
Diffstat (limited to 'lib/VMCore/Type.cpp')
-rw-r--r-- | lib/VMCore/Type.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/VMCore/Type.cpp b/lib/VMCore/Type.cpp index 7798489..eefcee9 100644 --- a/lib/VMCore/Type.cpp +++ b/lib/VMCore/Type.cpp @@ -159,6 +159,21 @@ unsigned Type::getPrimitiveSize() const { } } +/// isSizedDerivedType - Derived types like structures and arrays are sized +/// iff all of the members of the type are sized as well. Since asking for +/// their size is relatively uncommon, move this operation out of line. +bool Type::isSizedDerivedType() const { + if (const ArrayType *ATy = dyn_cast<ArrayType>(this)) + return ATy->getElementType()->isSized(); + + if (!isa<StructType>(this)) return false; + + // Okay, our struct is sized if all of the elements are... + for (subtype_iterator I = subtype_begin(), E = subtype_end(); I != E; ++I) + if (!(*I)->isSized()) return false; + + return true; +} /// getForwardedTypeInternal - This method is used to implement the union-find /// algorithm for when a type is being forwarded to another type. |