Editing Optimizing compiler (section)

===Prescient store optimizations===
{{anchor|Prescient store}}Prescient store optimizations allow store operations to occur earlier than would otherwise be permitted in the context of [[Threads (computer science)|threads]] and locks. The process needs some way of knowing ahead of time what value will be stored by the assignment that it should have followed. The purpose of this relaxation is to allow compiler optimization to perform certain kinds of code rearrangements that preserve the semantics of properly synchronized programs.<ref>{{cite book|chapter-url=http://titanium.cs.berkeley.edu/doc/java-langspec-1.0/17.doc.html#45376|chapter=17 Threads and Locks|at=17.8 Prescient Store Actions|title=The Java Language Specification|url=http://titanium.cs.berkeley.edu/doc/java-langspec-1.0/index.html|author1=James Gosling|author1-link=James Gosling|author2=Bill Joy|author2-link=Bill Joy|author3=Guy Steele|author3-link=Guy L. Steele Jr.|edition=1.0}}</ref>