Compiler IR-Based Program Encoding Method for Software Defect Prediction  

作　　者：Yong Chen Chao Xu Jing Selena He Sheng Xiao Fanfan Shen 

机构地区：[1]School of Information Engineering,Nanjing Audit University,Nanjing,211815,China [2]Department of Computer Science,Kennesaw State University,Kennesaw,30144-5588,USA [3]Information Science and Engineering Department,Hunan First Normal University,Changsha,410205,China

出　　处：《Computers, Materials & Continua》2022年第9期5251-5272,共22页计算机、材料和连续体（英文）

基　　金：This work was supported by the Universities Natural Science Research Project of Jiangsu Province under Grant 20KJB520026 and 20KJA520002;the Foundation for Young Teachers of Nanjing Auditing University under Grant 19QNPY018;the National Nature Science Foundation of China under Grant 71972102 and 61902189.

摘　　要：With the continuous expansion of software applications,people’s requirements for software quality are increasing.Software defect prediction is an important technology to improve software quality.It often encodes the software into several features and applies the machine learning method to build defect prediction classifiers,which can estimate the software areas is clean or buggy.However,the current encoding methods are mainly based on the traditional manual features or the AST of source code.Traditional manual features are difficult to reflect the deep semantics of programs,and there is a lot of noise information in AST,which affects the expression of semantic features.To overcome the above deficiencies,we combined with the Convolutional Neural Networks(CNN)and proposed a novel compiler Intermediate Representation(IR)based program encoding method for software defect prediction(CIR-CNN).Specifically,our program encoding method is based on the compiler IR,which can eliminate a large amount of noise information in the syntax structure of the source code and facilitate the acquisition of more accurate semantic information.Secondly,with the help of data flow analysis,a Data Dependency Graph(DDG)is constructed on the compiler IR,which helps to capture the deeper semantic information of the program.Finally,we use the widely used CNN model to build a software defect prediction model,which can increase the adaptive ability of the method.To evaluate the performance of the CIR-CNN,we use seven projects from PROMISE datasets to set up comparative experiments.The experiments results show that,in WPDP,with our CIR-CNN method,the prediction accuracy was improved by 12%for the AST-encoded CNN-based model and by 20.9%for the traditional features-based LR model,respectively.And in CPDP,the AST-encoded DBNbased model was improved by 9.1%and the traditional features-based TCA+model by 19.2%,respectively.

关 键 词：Compiler IR CNN data dependency graph defect prediction 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]