On behalf of the Steering Committee, we welcome you to the 18th ACM/IEEE International Symposium on Code Generation and Optimization (CGO '20) and to San Diego.

The Program Committee, co-chaired by Jingling Xue and Peng Wu, has prepared an excellent technical program involving 22 research papers plus (new this year) 3 tool and practical experience papers. We would like to express our appreciation to the Program Committee, along with all authors who submitted papers, and all external reviewers and volunteers, for their contributions.

In addition to the main symposium, we have a set of exciting workshops and tutorials thanks to the work of Johann Hauswald and Yunqi Zhang. There are 5 workshops and tutorials planned for the weekend before the symposium, and together with CC, PPoPP and HPCA, there are over 20 highly anticipated co-located events.

Organizing a conference as complex as CGO requires outstanding dedication and support of its organizers and CGO '20 is no different. Christophe Dubach served both as sponsor chair and finance chair with the hard work of balancing the budget and securing financial support from our sponsors. Michel Steuwer, Bastian Hagedorn, and Michael Laurenzano took care of the difficult and important task of chairing the artifact evaluation. Animesh Jain oversaw the administration of the student travel awards. Dongyoon Lee is the one who addressed the difficult task of handling registration. Changhee Jung organized the student research competition, which is also an important event for the conference. In this long list, we also want to mention Rajiv Gupta general chair of PPoPP who handled the hotel and local arrangements. We would like to finish our thanks with Aaron Smith as proceedings chair, Dongjie He as web chair, Fabian Grüber as publicity chair, and our general co-chairs Lingjia Tang and Jason Mars.

The Steering Committee provided advice throughout the organization of the event, as did past CGO organizers. We especially would like to thank Aaron Smith for his invaluable support. And we would like to thank the PPoPP and HPCA conferences for another opportunity to co-locate with them.

We thank all our financial sponsors for their continued generous support: ACM, IEEE, the US National Science Foundation, Alibaba Group, arm, Facebook, Futurewei, Google, Microsoft, Oracle, Uber, SIGMICRO, and SIGPLAN.

Finally, thanks to all of you as attendees and once again, welcome to CGO!

Fabrice Rastello, Inria, France