diff options
Diffstat (limited to 'llvm/include/llvm/Attributes.h')
| -rw-r--r-- | llvm/include/llvm/Attributes.h | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/llvm/include/llvm/Attributes.h b/llvm/include/llvm/Attributes.h index 1c2770995c2..4825c97a9b9 100644 --- a/llvm/include/llvm/Attributes.h +++ b/llvm/include/llvm/Attributes.h @@ -97,18 +97,6 @@ DECLARE_LLVM_ATTRIBUTE(AddressSafety,1ULL<<32) ///< Address safety checking is o #undef DECLARE_LLVM_ATTRIBUTE -/// Note that uwtable is about the ABI or the user mandating an entry in the -/// unwind table. The nounwind attribute is about an exception passing by the -/// function. -/// In a theoretical system that uses tables for profiling and sjlj for -/// exceptions, they would be fully independent. In a normal system that -/// uses tables for both, the semantics are: -/// nil = Needs an entry because an exception might pass by. -/// nounwind = No need for an entry -/// uwtable = Needs an entry because the ABI says so and because -/// an exception might pass by. -/// uwtable + nounwind = Needs an entry because the ABI says so. - } // namespace Attribute /// AttributeImpl - The internal representation of the Attributes class. This is @@ -118,6 +106,20 @@ class AttributesImpl; /// Attributes - A bitset of attributes. class Attributes { public: + /// Note that uwtable is about the ABI or the user mandating an entry in the + /// unwind table. The nounwind attribute is about an exception passing by the + /// function. + /// + /// In a theoretical system that uses tables for profiling and sjlj for + /// exceptions, they would be fully independent. In a normal system that uses + /// tables for both, the semantics are: + /// + /// nil = Needs an entry because an exception might pass by. + /// nounwind = No need for an entry + /// uwtable = Needs an entry because the ABI says so and because + /// an exception might pass by. + /// uwtable + nounwind = Needs an entry because the ABI says so. + enum AttrVal { None = 0, ///< No attributes have been set AddressSafety = 1, ///< Address safety checking is on. @@ -375,6 +377,19 @@ struct AttributeWithIndex { ///< Index 0 is used for return value attributes. ///< Index ~0U is used for function attributes. + static AttributeWithIndex get(unsigned Idx, + ArrayRef<Attributes::AttrVal> Attrs) { + Attributes::Builder B; + + for (ArrayRef<Attributes::AttrVal>::iterator I = Attrs.begin(), + E = Attrs.end(); I != E; ++I) + B.addAttribute(*I); + + AttributeWithIndex P; + P.Index = Idx; + P.Attrs = Attributes::get(B); + return P; + } static AttributeWithIndex get(unsigned Idx, Attributes Attrs) { AttributeWithIndex P; P.Index = Idx; |
