Wed 17 Jul 2019 11:50 - 12:10 at Track 1 - Language Design and Implementation

DynSem is a domain-specific language for concise specification of the dynamic semantics of programming languages, aimed at rapid experimentation and evolution of language designs. To maintain a short definition-to-execution cycle, DynSem specifications are meta-interpreted. Meta-interpretation introduces runtime overhead that is difficult to remove by using interpreter optimization frameworks such as the Truffle/Graal Java tools; previous work has shown order-of-magnitude improvements from applying Truffle/Graal to a meta-interpreter, but this is still far slower than what can be achieved with a language-specific interpreter. In this paper, we show how specifying the meta-interpreter using scope graphs, which encapsulate static name binding and resolution information, produces much better optimization results from Truffle/Graal. Furthermore, we identify that JIT compilation is hindered by large numbers of calls between small polymorphic rules and we introduce rule cloning to derive larger monomorphic rules at run time as a countermeasure. Our contributions improve the performance of DynSem-derived interpreters to within a factor of 1.5-4.5 (in most cases) of a handwritten language-specific interpreter, and to within an order of magnitude of native code.

Wed 17 Jul

10:30 - 12:10: ECOOP Research Papers - Language Design and Implementation at Track 1
ecoop-2019-papers10:30 - 10:50
Research paper
Shawn Meier, Sergio MoverUniversity of Colorado Boulder, Bor-Yuh Evan ChangUniversity of Colorado Boulder
ecoop-2019-papers10:50 - 11:10
Research paper
Kiko Fernandez-ReyesUppsala University, Einar Broch JohnsenUniversity of Oslo, Dave ClarkeUppsala Univ. Sweden and KU Leuvern, Ludovic HenrioCNRS, Tobias WrigstadUppsala University
ecoop-2019-papers11:10 - 11:30
Research paper
Daniel PelsmaekerDelft University of Technology, Netherlands, Hendrik van AntwerpenTU Delft, Eelco VisserDelft University of Technology
ecoop-2019-papers11:30 - 11:50
Research paper
Pascal WeisenburgerTechnische Universität Darmstadt, Guido SalvaneschiTU Darmstadt
ecoop-2019-papers11:50 - 12:10
Research paper
Vlad VerguTU Delft, Eelco VisserDelft University of Technology, Andrew TolmachPortland State University