Static Single Assignment (SSA) form is an intermediate representation that allows a compiler to perform advanced optimizations to extract parallelism. Predication is an architectural feature to maximize instruction level parallelism. If a compiler uses a predicated SSA form that is a combination of an SSA form and predication as an intermediate representation, it can perform advance optimizations that are otherwise difficult to apply in order to aggressively extract a parallelism from a program. Since the code in SSA form cannot be executed directly on the existing target architecture, a translation out of the predicated SSA form must be performed, and this translation is not trivial. We propose an algorithm to translate out of predicated SSA form.
By: Kazuaki Ishizaki and Tatsushi Inagaki
Published in: RT0540 in 2007
LIMITED DISTRIBUTION NOTICE:
This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.
Questions about this service can be mailed to reports@us.ibm.com .