Editing Static single-assignment form (section)

=== Open-source ===

* [[Mono (software)|Mono]] uses SSA in its JIT compiler called Mini
* [[WebKit]] uses SSA in its JIT compilers.<ref>{{Cite web|url=https://webkit.org/blog/3362/introducing-the-webkit-ftl-jit/|title=Introducing the WebKit FTL JIT|date=13 May 2014}}</ref><ref>{{Cite web|url=https://webkit.org/blog/5852/introducing-the-b3-jit-compiler/|title=Introducing the B3 JIT Compiler|date=15 February 2016}}</ref>
* [[Swift (programming language)|Swift]] defines its own SSA form above LLVM IR, called SIL (Swift Intermediate Language).<ref>{{Cite web|url=https://github.com/swiftlang/swift/blob/main/docs/SIL/SIL.md|title=Swift Intermediate Language (GitHub)|website=[[GitHub]]|date=30 October 2021}}</ref><ref>{{Cite web|url=https://www.youtube.com/watch?v=Ntj8ab-5cvE |archive-url=https://ghostarchive.org/varchive/youtube/20211221/Ntj8ab-5cvE |archive-date=2021-12-21 |url-status=live|title=Swift's High-Level IR: A Case Study of Complementing LLVM IR with Language-Specific Optimization, LLVM Developers Meetup 10/2015|website=[[YouTube]]|date=9 November 2015 }}{{cbignore}}</ref>
* The [[Erlang (programming language)|Erlang]] compiler was rewritten in OTP 22.0 to "internally use an intermediate representation based on Static Single Assignment (SSA)", with plans for further optimizations built on top of SSA in future releases.<ref>{{Cite web|url=http://www.erlang.org/news/132|title=OTP 22.0 Release Notes}}</ref>
* The [[LLVM]] Compiler Infrastructure uses SSA form for all scalar register values (everything except memory) in its primary code representation. SSA form is only eliminated once register allocation occurs, late in the compile process (often at link time).
* The [[GNU Compiler Collection]] (GCC) makes extensive use of SSA since version 4 (released in April 2005). The [[front and back ends|frontends]] generate "[[GIMPLE#GENERIC and GIMPLE|GENERIC]]" code that is then converted into "[[GIMPLE#GENERIC and GIMPLE|GIMPLE]]" code by the "gimplifier". High-level optimizations are then applied on the SSA form of "GIMPLE". The resulting optimized intermediate code is then translated into [[Register Transfer Language|RTL]], on which low-level optimizations are applied. The architecture-specific [[Front and back ends|backend]]s finally turn RTL into [[assembly language]].
* [[Go (programming language)|Go]] (1.7: for x86-64 architecture only; 1.8: for all supported architectures).<ref>{{Cite web|url=https://golang.org/doc/go1.7#compiler|title=Go 1.7 Release Notes - The Go Programming Language|website=golang.org|access-date=2016-08-17}}</ref><ref>{{Cite web|url=https://golang.org/doc/go1.8#compiler|title=Go 1.8 Release Notes - The Go Programming Language|website=golang.org|access-date=2017-02-17}}</ref>
* [[IBM]]'s open source adaptive [[Java virtual machine]], [[Jikes RVM]], uses extended Array SSA, an extension of SSA that allows analysis of scalars, arrays, and object fields in a unified framework. Extended Array SSA analysis is only enabled at the maximum optimization level, which is applied to the most frequently executed portions of code.
* The [[Mozilla]] [[Firefox]] [[SpiderMonkey]] JavaScript engine uses SSA-based IR.<ref>{{cite web|url=https://wiki.mozilla.org/IonMonkey/Overview|title=IonMonkey Overview}},</ref>
* The [[Chromium (web browser)|Chromium]] [[V8 JavaScript engine]] implements SSA in its Crankshaft compiler infrastructure as [https://blog.chromium.org/2010/12/new-crankshaft-for-v8.html announced in December 2010]
* [[PyPy]] uses a linear SSA representation for traces in its JIT compiler.
* The [[Android Runtime]]<ref>{{cite video |title=The Evolution of ART - Google I/O 2016  |time=3m47s |url=https://www.youtube.com/watch?v=fwMM6g7wpQ8 |date=25 May 2016 |work=Google}}</ref> and the [[Dalvik (software)|Dalvik Virtual Machine]] use SSA.<ref>{{cite web |title=JIT through the ages |url=http://www.cs.columbia.edu/~aho/cs6998/reports/12-12-11_Ramanan_JIT.pdf |last=Ramanan |first=Neeraja | date=12 Dec 2011 }}</ref>
* The Standard ML compiler [[MLton]] uses SSA in one of its intermediate languages.
* [[LuaJIT]] makes heavy use of SSA-based optimizations.<ref>{{cite web|url=http://wiki.luajit.org/Optimizations|title=Bytecode Optimizations|publisher=the LuaJIT project}}</ref>
* The [[PHP]] and [[Hack (programming language)|Hack]] compiler [[HHVM]] uses SSA in its IR.<ref>{{cite web|url=https://github.com/facebook/hhvm/blob/master/hphp/doc/ir.specification|title=HipHop Intermediate Representation (HHIR)|website=[[GitHub]]|date=30 October 2021}}</ref>
* libFirm, a library for use as the [[Compiler#Three-stage compiler structure|middle and back ends of a compiler]], uses SSA form for all scalar register values until code generation by use of an SSA-aware register allocator.<ref>{{cite web|url=http://pp.ipd.kit.edu/firm/|title=Firm - Optimization and Machine Code Generation}}</ref>
* Various [[Mesa (computer graphics)|Mesa]] drivers via NIR, an SSA representation for shading languages.<ref>{{Cite web|url=https://lists.freedesktop.org/archives/mesa-dev/2014-December/072761.html|title=Reintroducing NIR, a new IR for mesa|last=Ekstrand|first=Jason|date=16 December 2014 }}</ref>