Programming Language Design and Implementation (PLDI) is one of the ACM SIGPLAN's most important conferences. The precursor of PLDI was the Symposium on Compiler Optimization, held July 27–28, 1970 at the University of Illinois at Urbana-Champaign and chaired by Robert S. Northcote. That conference included papers by Frances E. Allen, John Cocke, Alfred V. Aho, Ravi Sethi, and Jeffrey D. Ullman. The first conference in the current PLDI series took place in 1979 under the name SIGPLAN Symposium on Compiler Construction in Denver, Colorado. The next Compiler Construction conference took place in 1982 in Boston, Massachusetts. The Compiler Construction conferences then alternated with SIGPLAN Conferences on Language Issues until 1988, when the conference was renamed to PLDI. From 1982 until 2001, the conference acronym was SIGPLAN 'xx. Starting in 2002, the initialism became PLDI 'xx, and in 2006 PLDI xxxx. Conference locations and organizers PLDI 2022 - SIGPLAN Conference on Programming Language Design and Implementation: San Diego, CA, United States General Chair: Ranjit Jhala Program Chair: Isil Dillig PLDI 2021 - SIGPLAN Conference on Programming Language Design and Implementation: Online due to COVID-19 General Chair: Stephen N. Freund Program Chair: Eran Yahav PLDI 2020 - SIGPLAN Conference on Programming Language Design and Implementation: London, United Kingdom (planned); moved online due to COVID-19 General Chair: Alastair F. Donaldson Program Chair: Emina Torlak proceedings PLDI 2019 - SIGPLAN Conference on Programming Language Design and Implementation: Phoenix, AZ, United States Conference Chair: Kathryn S. McKinley Program Chair: Kathleen Fisher PLDI 2018 - SIGPLAN Conference on Programming Language Design and Implementation: Philadelphia, PA, United States Conference Chair: Jeffrey S. Foster Program Chair: Dan Grossman PLDI 2017 - SIGPLAN Conference on Programming Language Design and Implementation: Barcelona, Spain Conference Chair: Albert Cohen Program Chair: Martin Vechev PLDI 2016 - SIGPLAN Conference on Programming Language Design and Implementation: Santa Barbara, CA, United States Conference Chair: Chandra Krintz Program Chair: Emery Berger PLDI 2015 - SIGPLAN Conference on Programming Language Design and Implementation: Portland, OR, United States Conference Chair: Dave Grove Program Chair: Steve Blackburn Part of the Federated Computing Research Conference 2015 PLDI 2014 - SIGPLAN Conference on Programming Language Design and Implementation: Edinburgh, Scotland, United Kingdom Conference Chair: Michael O'Boyle Program Chair: Keshav Pingali PLDI 2013 - SIGPLAN Conference on Programming Language Design and Implementation: Seattle, WA, United States Conference Chair: Hans-J. Boehm Program Chair: Cormac Flanagan PLDI 2012 - SIGPLAN Conference on Programming Language