| 词条 | GNU lightning | ||||||||||||||||||||
| 释义 |
}}{{Infobox Software | name = GNU lightning | logo = Heckert GNU white.svg | logo size = 100px | developer = GNU Project | released = {{start date and age|2001|1|19}}[1] | operating system = Cross-platform | platform = GNU | genre = Just-in-time compilation | license = GNU General Public License, GNU Lesser General Public License | website = {{Official website|https://www.gnu.org/software/lightning/}} }}{{Portal|Free and open-source software}}GNU lightning is a free-software library for generating assembly language code at run-time. Version 2.0, released in August 2013, supports backends for SPARC (32-bit), x86 (32- and 64-bit), MIPS, ARM, ia64, HPPA and PowerPC (32-bit).[2] Advantages over other librariesThe features GNU lightning provides make it useful for Just-in-Time Compilation. In comparison to libraries such as LLVM or libJIT, GNU lightning provides only a low-level interface for assembling from a standardized RISC assembly language—loosely based on the SPARC and MIPS architectures[3]—into the target architecture's machine language. DisadvantagesIt does not provide register allocation, data-flow or control-flow analysis, or optimization. Instruction setGNU lightning's instruction set is based loosely on existing RISC architectures. TypesWhen required instructions handle data with these 9 types:
Projects that use GNU lightningRacket,[4] GNU Smalltalk,[5] GNU Guile,[6] and CLISP[7] make use of GNU lightning for just-in-time compilation. GNU lightning was first developed as a tool to be used in GNU Smalltalk's dynamic translator from bytecodes to native code.[8]References1. ^{{ cite web | url = http://ftp.gnu.org/gnu/lightning/ | title = ChangeLog | accessdate = 2009-02-22 | publisher = GNU Project }} 2. ^Release announcement. 2013-08-23 3. ^{{cite web | url=https://www.gnu.org/software/lightning/manual/lightning.html |title= Using and porting GNU lightning | accessdate=2009-02-22}} 4. ^{{cite web | url=https://github.com/plt/racket/tree/master/racket/src/racket/src/lightning | title=Racket source code repository | accessdate=2014-05-17}} 5. ^{{cite web | url=http://smalltalk.gnu.org/project | title=GNU Smalltalk project page | accessdate=2014-05-17}} 6. ^{{cite web | url=https://www.gnu.org/software/guile/docs/master/guile.html/Just_002dIn_002dTime-Native-Code.html |title=Just-In-Time Native Code | accessdate=2019-03-11}} 7. ^{{cite web | url=http://clisp.cons.org/impnotes.html | title=Implementation notes for GNU CLISP | accessdate=2009-02-23 }} 8. ^{{cite web | url=https://www.gnu.org/software/lightning/manual/lightning.html#Acknowledgements | title=GNU lightning user manual, acknowledgements | accessdate=2014-05-17}} External links
1 : GNU Project software |
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