Method and system for optimizing a software program using...

Details Method and system for optimizing a software program using... Method and system for optimizing a software program using...

G - Physics

06

F

G06F 9/45 (2006.01)

Patent

CA 2447443

Disclosed is an interprocedural compilation technique for moving upward exposed expressions across procedure boundaries to potentially improve performance in the execution of compiled software program code. Intermediate representations of a software program, including a call graph, a control flow graph, a data flow graph and a post-dominate tree, may be generated and used. In an embodiment, a software program compiler may be configured to carry out a depth-first traversal of each procedure in the software program, as represented by nodes in a call graph intermediate representation of the software program. Candidate upward exposed expressions are identified in callee procedures, and selected for possible interprocedural code motion. In an embodiment, a procedure interface descriptor is built for each callee procedure by defining a new formal parameter for each upward exposed expression moved, replacing each upward exposed expression with the new formal parameter, and identifying any dead parameters resulting from removal of the upward exposed expression.

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