diff options
Diffstat (limited to 'llvm/include')
| -rw-r--r-- | llvm/include/llvm/ParameterAttributes.h | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/llvm/include/llvm/ParameterAttributes.h b/llvm/include/llvm/ParameterAttributes.h index 79b5d0c2a61..29bbd23abc1 100644 --- a/llvm/include/llvm/ParameterAttributes.h +++ b/llvm/include/llvm/ParameterAttributes.h @@ -130,13 +130,24 @@ class ParamAttrsList : public FoldingSetNode { : attrs(attrVec), refCount(0) {} public: - /// This method ensures the uniqueness of ParamAttrsList instances. The + /// This method ensures the uniqueness of ParamAttrsList instances. The /// argument is a vector of attribute/index pairs as represented by the - /// ParamAttrsWithIndex structure. The vector is used in the construction of - /// the ParamAttrsList instance. If an instance with identical vector pairs - /// exists, it will be returned instead of creating a new instance. + /// ParamAttrsWithIndex structure. The index values must be in strictly + /// increasing order and ParamAttr::None is not allowed. The vector is + /// used to construct the ParamAttrsList instance. If an instance with + /// identical vector pairs exists, it will be returned instead of creating + /// a new instance. /// @brief Get a ParamAttrsList instance. - static ParamAttrsList *get(const ParamAttrsVector &attrVec); + static const ParamAttrsList *get(const ParamAttrsVector &attrVec); + + /// Returns the ParamAttrsList obtained by modifying PAL using the supplied + /// list of attribute/index pairs. Any existing attributes for the given + /// index are replaced by the given attributes. If there were no attributes + /// then the new ones are inserted. Attributes can be deleted by replacing + /// them with ParamAttr::None. Index values must be strictly increasing. + /// @brief Get a new ParamAttrsList instance by modifying an existing one. + static const ParamAttrsList *getModified(const ParamAttrsList *PAL, + const ParamAttrsVector &modVec); /// Returns whether each of the specified lists of attributes can be safely /// replaced with the other in a function or a function call. |
