What is Glasgow Haskell Compiler (GHC)?
The Glasgow Haskell Compiler (GHC) is an open-source native code compiler for the functional programming language Haskell. It provides a cross-platform environment for the writing and testing of Haskell code and it supports numerous extensions, libraries, and optimizations that streamline the process of generating and executing code. GHC is the most commonly used Haskell compiler.
Foundation of Glasgow Haskell Compiler (GHC):
GHC originally started in 1989 as a prototype, written in LML (Lazy ML) by Kevin Hammond at the University of Glasgow. Later that year, the prototype was completely rewritten in Haskell, except for its parser, by Cordelia Hall, Will Partain, and Simon Peyton Jones. Its first beta release was on 1 April 1991 and subsequent releases added a strictness analyzer as well as language extensions such as monadic I/O, mutable arrays, unboxed data types, concurrent and parallel programming models (such as software transactional memory and data parallelism) and a profiler.
Peyton Jones, as well as Marlow, later moved to Microsoft Research in Cambridge, England, where they continued to be primarily responsible for developing GHC. GHC also contains code from more than three hundred other contributors. Since 2009, third-party contributions to GHC have been funded by the Industrial Haskell Group.
GHC itself is written in Haskell, but the runtime system for Haskell, essential to run programs, is written in C and C--.
GHC’s front end—incorporating the lexer, parser and type checker—is designed to preserve as much information about the source language as possible until after type inference is complete, toward the goal of providing clear error messages to users. After type checking, the Haskell code is desugared into a typed intermediate language known as “Core”
What is Haskell?
Haskell is a general-purpose, statically typed, purely functional programming language with type inference and lazy evaluation. Designed for teaching, research and industrial application, Haskell has pioneered a number of advanced programming language features such as type classes, which enable type-safe operator overloading. Haskell’s main implementation is the Glasgow Haskell Compiler (GHC).
Foundation of Haskell:
He is a major contributor to the design of the Haskell programming language, and a lead developer of the Glasgow Haskell Compiler (GHC). He is also co-creator of the C—programming language, designed for intermediate program representation between the language-specific front-end of a compiler and a general-purpose back-end code generator and optimiser. C—is used in GHC.
Haskell’s semantics are historically based on those of the Miranda programming language, which served to focus the efforts of the initial Haskell working group. The last formal specification of the language was made in July 2010, while the development of GHC has expanded Haskell via language extensions. The next formal specification was planned for 2020
Early :
Early 2006, the process of defining a successor to the Haskell 98 standard, informally named Haskell Prime, began. This was intended to be an ongoing incremental process to revise the language definition, producing a new revision up to once per year. The first revision, named Haskell 2010, was announced in November 2009 and published in July 2010.
Haskell 2010 is an incremental update to the language, mostly incorporating several well-used and uncontroversial features previously enabled via compiler-specific flags.
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