Context-sensitive compiler directives

摘要

Methods, systems and computer program products are provided for creating and compiling source program code using one or more compiler directives a programming environment. The compiler directives may provide information on how to compile the source program code. The compiler directives may apply to the source program code under a given condition. The compiler directive may appear at the second or lower level of the source program code. The present invention may also provide a compiler that can determine the given condition of the source program code and apply the compiler directives based upon the determination of the given condition.

主权项

1. In a computational device providing a programming environment, a method comprising:
providing a compiler directive; creating a program using the compiler directive, the creating comprising:
embedding the compiler directive in the program, where the compiler directive:
is embedded in the program prior to a compile-time analysis,appears in the program in combination with a condition associated with a function or a unit of the program, andis applied to the program during compilation of the program when the condition is satisfied; performing the compile-time analysis of the program; predicting a run-time behavior of the program based on the compile-time analysis; evaluating the condition based on the predicted run-time behavior of the program; determining whether to apply the compiler directive to the program, the determining comprising:
determining that the condition is satisfied,applying the compiler directive to the program, the applying based upon the determining that the condition is satisfied, andproviding, via the compiler directive, a command, the command specifying how to compile the program based on the predicted run-time behavior of the program, where:
the command is provided subsequent to the compile-time analysis; and generating, using the program, a compiled program based on the runtime analysis.