NDLI: A systematic derivation of the STG machine verified in Coq

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A systematic derivation of the STG machine verified in Coq

Content Provider	ACM Digital Library
Author	Biernacki, Dariusz Pirog, Maciej
Abstract	Shared Term Graph (STG) is a lazy functional language used as an intermediate language in the Glasgow Haskell Compiler (GHC). In this article, we present a natural operational semantics for STG and we mechanically derive a lazy abstract machine from this semantics, which turns out to coincide with Peyton-Jones and Salkild's Spineless Tagless G-machine (STG machine) used in GHC. Unlike other constructions of STG-like machines present in the literature, ours is based on a systematic and scalable derivation method (inspired by Danvy et al.'s functional correspondence between evaluators and abstract machines) and it leads to an abstract machine that differs from the original STG machine only in inessential details. In particular, it handles non-trivial update scenarios and partial applications identically as the STG machine. The entire derivation has been formalized in the Coq proof assistant. Thus, in effect, we provide a machine checkable proof of the correctness of the STG machine with respect to the natural semantics.
Starting Page	25
Ending Page	36
Page Count	12
File Format	PDF QT / MOV
ISBN	9781450302524
DOI	10.1145/1863523.1863528
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2010-09-30
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Abstract machine Coq Stg Derivation Verification Natural semantics
Content Type	Video Text
Resource Type	Article

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