Compiling optimization of an application and compiler thereof

摘要

One aspect is a method for compiling optimization of an application and a compiler thereof. The method includes determining could-be-constant variables in source code of the application. Constant variables designated as final constant variables and values of the constant variables are obtained using the could-be-constant variables. The application is compiled using the constant variables and the values of the constant variables.

主权项

1. A method for compiling optimization of an application, comprising:
determining could-be-constant variables in source code of the application, the could-be-constant variables each having a uniquely determined constant value during run time, wherein the determining comprises:
analyzing the source code to obtain potential could-be-constant variables;removing the potential could-be-constant variables that are assigned multiple times from the potential could-be-constant variables by counting assignment operations of the potential could-be-constant variables and removing the potential could-be-constant of which the count of the assignment operations exceeds one, resulting in a list of remaining potential could-be-constant variables;determining affected variables that are affected by external information variables in the source code, the external information variables comprising information received from outside of the application; andselecting matching variables from the remaining potential could-be-constant variables and the affected variables as the could-be-constant variables; obtaining constant variables designated as final constant variables and values of the constant variables using the could-be-constant variables; and compiling the application using the constant variables and the values of the constant variables.